Constructed from premium 6061-T6 aluminum, the JE Machine Tech A2 Rifle Buffer Tube Combo is designed for exceptional durability and performance in AR15/10 rifles. This combo includes an A2 buffer tube, spacer, and screw, ensuring a perfect fit and compliance with Mil-Spec standards for reliable use. A1 length buffer tube Great fit for AR15/10 rifles Type II anodized 6061-T6 aluminum Compatible with .223 / .308 buffers Weight 3.2 oz A2 Buffer Tube Spacer and A2 Rifle Length Vented Buffer Tube Screw included Choose the JE Machine Tech A2 buffer tube for your next build and experience unmatched reliability and quality.